Family name Prasittithum (Prasittithum 
) , in the entire world, is a very rare last name. The family name Prasittithum is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Prasittithum | Thailand |
Kantika, Narutita, Kamonwan, and Chatchadaporn